Blar i USN Open Archive på forfatter "Johannessen, Erik Andrew"
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Boron-induced growth of highly textured Ag (1 1 1) films with nano-tentacle structures for the electrochemical reduction of CO2 to CO
Gustavsen, Kim Robert; Huang, Hao; Johannessen, Erik Andrew; Wang, Kaiying (Peer reviewed; Journal article, 2023)Ag is a cost-effective alternative to Au as a catalyst for the electrochemical reduction of CO2 into CO, but a reduction in the accompanying overpotential is required to make Ag viable. In this study we use B to modulate ... -
Carbon modified silver thin-film catalysts for electrochemical reduction of CO2 to syngas with tunable H2/CO ratio
Gustavsen, Kim Robert; Johannessen, Erik Andrew; Wang, Kaiying (Peer reviewed; Journal article, 2023)This study investigates carbon (C)-modified silver (Ag) thin film catalysts for electrochemical syngas production. The Ag-C catalyst is synthesized using a co-deposition process with separate C and Ag sputtering targets. ... -
DRCAP : Detection, Regression, Classification, and Processing of Apple trees
Mavaddatkhelejani, Amin (Master thesis, 2023)Yield prediction is a crucial aspect of crop management in the fruit farming industry. In recent years, a variety of methods have been increasingly utilized to address this challenge, in order to enhance the technical ... -
Hybrid electrochemical sensor platform for capsaicin determination using coarsely stepped cyclic squarewave voltammetry
Søpstad, Sindre; Imenes, Kristin; Johannessen, Erik Andrew (Peer reviewed; Journal article, 2019)A small, standalone electrochemical hybrid sensor platform, combining flexible electronics and screen-printed electrodes, is demonstrated in the determination of capsaicin through adsorptive stripping voltammetry. The ... -
Improved Crystallinity of Annealed 0002 AlN Films on Sapphire Substrate
Comis Bersch, Bruno; Caminal Ros, Tomàs; Tollefsen, Vegard; Johannessen, Erik Andrew; Johannessen, Agne (Peer reviewed; Journal article, 2023)AlN is a piezoelectric material used in telecommunication applications due to its high surface acoustic wave (SAW) velocity, stability, and mechanical strength. Its performance is linked to film quality, and one method to ... -
Long-term stability of screen-printed pseudo-reference electrodes for electrochemical biosensors
Søpstad, Sindre; Johannessen, Erik Andrew; Seland, Frode; Imenes, Kristin (Journal article; Peer reviewed, 2018)Pseudo reference electrodes forms an essential part of electrochemical transducers, where they are used to maintain a reference potential for the system. Yet, little is known about their long-term stability, and any drift ... -
A micro fuel cell for abiotical catalysis of glucose
Do, Uyen Phuong; Seland, Frode; Johannessen, Erik Andrew (Peer reviewed; Journal article, 2020)A miniaturised abiotical fuel cell designed for operation inside a physiologically relevant mixed fuel environment of dissolved di-oxygen (DO) and glucose, have been realized by embedding the glucose sensitive anode below ... -
Precision Monitoring in Agriculture
Steen, Hanne (Master thesis, 2024)This thesis presents a study on the development of a temperature monitoring system tailored for small farm animals, focusing specifically on sheep. The system aims to promptly detect deviations from average body temperature ... -
Raney-platinum thin film electrodes for the catalysis of glucose in abiotically catalyzed micro-glucose fuel cells
Do, Uyen Phuong; Seland, Frode; Wang, Kaiying; Johannessen, Erik Andrew (Peer reviewed; Journal article, 2019)Fuel cells capable of synthetic glucose catalysis have revolved around the implementation of abiotic catalysts that require extreme acid and alkaline environments. These are not compatible with implantable medical sensor ... -
The Characterisation and Quantification of Immobilised Concanavalin A on Quartz Surfaces Based on The Competitive Binding to Glucose and Fluorescent Labelled Dextran
Hoang, Trinh Bich; Stokke, Bjørn Torger; Hanke, Ulrik; Johannessen, Agne; Johannessen, Erik Andrew (Journal article; Peer reviewed, 2019)The competition between various carbohydrates in the binding to Concanavalin A (Con A) can be exploited in gravimetric microsensors that detect changes in mass or viscoelasticity as a function of glucose concentration. ... -
The real area of nanoporous catalytic surfaces of gold and palladium in aqueous solutions
Do, Uyen Phuong; Seland, Frode; Johannessen, Erik Andrew (Journal article; Peer reviewed, 2018)The determination of the real, or active, area of a catalytic surface is a key requirement to understand or quantify parameters related to its electrochemical behavior. There are several experimental methods available, but ... -
Thin film nanoporous electrodes for the selective catalysis of oxygen in abiotically catalysed micro glucose fuel cells
Do, Uyen Phuong; Seland, Frode; Maharbiz, Michel M.; Wang, Kaiying; Johannesen, Øivind; Johannessen, Erik Andrew (Journal article; Peer reviewed, 2016)Selective reduction of oxygen is an important property of fuel cells designed to operate in a mixed fuel environment containing both oxidizing and reducing reactants. This would be of particular importance in the design ... -
Wireless Temperature Monitoring for Agriculture
Bjørkedal, Helene (Master thesis, 2024)This thesis focuses on the development a circuit board-based data processing unit with NFC and Bluetooth communication, aimed at advancing animal welfare in agriculture. The primary goal of this system is to retrieve ...